Home / 121,863,536.20-168,171,679.95-69,653,692.87

Finding the Fourth Proportional to 121,863,536.20, 168,171,679.95 and 69,653,692.87

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Solution

The fourth proportional to 121,863,536.20, 168,171,679.95 and 69,653,692.87 is: 96,122,096.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,863,536.20 : 168,171,679.95 = 69,653,692.87 : x
  2. Step 2: Convert to fraction form
    121,863,536.20/168,171,679.95 = 69,653,692.87/x
  3. Step 3: Cross multiply
    121,863,536.20x = 168,171,679.95 × 69,653,692.87
  4. Step 4: Simplify right side
    121,863,536.20x = 11,713,778,544,669,236
  5. Step 5: Solve for x
    x = 11,713,778,544,669,236/121,863,536.20
  6. Step 6: Final answer
    x = 96,122,096.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.